---
id: CVE-2026-87684
title: >-
  A stack-based buffer overflow vulnerability exists in the SNMP daemon request
  handling of Brocade Fabric versions before 10.0.1
summary: >-
  A stack-based buffer overflow vulnerability exists in the SNMP daemon request
  handling of Brocade Fabric versions before 10.0.1. When processing an incoming
  SNMPv3 packet, an internal statistics gathering handler copies user-supplied
  con…
severity: high
cvss: 8.7
cvssVector: 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'
cwe:
  - CWE-121
vendor: Brocade
product: Fabric OS
affected:
  - fabric_os < 10.0.1
published: '2026-10-08'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T03:16:37.237'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-87684'
references:
  - url: 'https://support.broadcom.com/external/content/SecurityAdvisories/0/39078'
    label: sirt@brocade.com
tags:
  - nvd
  - cve.org
cvssSource: cna
ingestedAt: '2026-10-08T03:03:35.550Z'
---

## Overview

A stack-based buffer overflow vulnerability exists in the SNMP daemon request handling of Brocade Fabric versions before 10.0.1. When processing an incoming SNMPv3 packet, an internal statistics gathering handler copies user-supplied context name data into a fixed-size buffer without properly validating the length of the string. A remote, unauthenticated attacker (under default configuration) can exploit this vulnerability by sending a specially crafted SNMPv3 packet, leading to memory corruption, daemon crash (Denial of Service), or potential arbitrary code execution.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.